Rotary trimmer



(No Model.)

' A. S. VOSE. ROTARY lTRIMMERl v No. 528,311. Patented Oct. 30, 1894.

UNITED STATES,A

PATENT OFFICE.

AMBROS S. VOSE, OF BOSTON, MASSACHUSETTS.

ROTARY TRIMMER.

SPECIFICATION forming part of Letters YPatent No. 528,311, dated October 30, 1894. Application filed January 11, 1894.-- Serial No. 496.482. (No model.)

To all whom it may concern,.-v

Beit known that I, AMBEosE S. VosE, of Boston, in the county of Suolk, State of Massachusetts, have invented certain new and useful Improvements in Rotary Trimmers, of which the following is a description sufficiently full, clear, and exact to enable any person skilled in the art or science to which said invention appertains to make and use the same, reference being had tothe accompanying drawings, forming part of this specification, in whichr Figure l is a front elevation of a trimmerhead embodying my improvement. Fig. 2 is a vertical longitudinal section of the same taken on line, or, in Fig. l; Fig. 3, a like View showing the application of the end cap or guard, the shaft being represented as broken oiTn and Fig. 4, a vertical transversev section of said guard.

Like letters and figures of reference indicate corresponding parts in the different figures of the drawings.

My invention relates especially to an iniprovement in heel and sole trimmers for boots and shoes, it being designed particularly as an improvement on the device shown and described in my United States Letters Patent numbered 457,386, dated August 11, 1891.

The object of my present invention is to improve the method of mounting the trimmer-head and to render the device applicable for receiving knives of different sizes, thus avoiding the necessity of providinga separate head for each set of knives.

The nature and operation of the im provement will be readily understood by all conversant with such matters from the following explanation.

In the drawings, A represents the head or wheel of the trimmer which is provided on one face with a hub, h, and with inclined throats, d, in whichthe knives, f, are mounted. As the general construction and arrangement of this head are the same as that shown in the Letters Patent referred to and are not herein specifically claimed it is deemed unessential that the same be particularly described.

A guide or adjusting sleeve, C, is mounted on the shaft, D, and when suitably adjusted as hereinafter described may be locked against rotation by means of a set-screw, g.

The shaft, D, is reduced at its end forming a spindle, h, tapering outwardly and the spindle opening, t', of the head, A, is s haped to conform to said taper. The spindle is tapped and threaded centrally at, k, and the head, A, is secured thereto by a screw, m, passing through a flanged nut,p, inserted in the spindlesocket of the head, a washer or ring, q, being interposed and overlapping the knives. The sleeve, C, has an annular-cap flange, t, for receiving the head, A, which 1t overlaps and serves as a guide. The outer face or edge of said ilange is provided with an annular shoulder, o, which registers with the shoulder, '122, formed in the knives, f, in the head shown in the patent referred to. The inner end of the sleeve, C, is exteriorly screw-threaded at, w. The knives, f, haveY cutting lips, 16, at the outer ends of the cutting edges which trim the soles on theinner edges adjacent the stitches. A collar, H, is held on the shaft .by a set-screw, 1 7. Said collar is provided with an annular groove, y. A nut, j, is .fitted to rotate on said collar and is held against longitudinal movements by pins, z, whichproject into said groove, y. The nut is interiorly screw-threaded to receive the threaded end of the sleeve. The head, A, being mounted on the spindle, h, by turning the nut, x7, the sleeve can Joe moved on the shaft adjusting by means ofits cap-header dauge the breadth of cut of the knives,f, in a manner which will be readily understood by all conversant with such matters without a more explicit description. The liange, 2f, is provided with openings, 15, through which the chips pass from the knives. Y

By means of the screw, m, and the tapering spindle the wear on the head may be readily taken up preventing the same from chattering. After adjustment the sleeve, C, can be held by the set screw, g. To regulate the cut of the knife-dange, 16, I provide the cap-guard, E, socketed at, 18, to receive the nut, p, and having an annular i'iange, 19, which overlaps theV head, A. The guard is held by the screw, m, passing centrally through it. Its outer edge has a guide-flange, 20, which enters between the upper and sole. The flange, 19, gages the cut of the knife at this point.

Having thus explained my invention, what I claim isthe screw and overlappin g said head, substantially as and for the purpose set forth.

3. The shaft and cutter-head in combination with the detachable knives having lips, I5 16; the cap, E, provided with anges, 19, and, 20, and mechanism for securing said cap and head to the shaft.

AMBROSE S. VOSE. Witnesses:

O. M. SHAW, HATFELDT COLBURN. 

